Kenco Engineering ASF Sight Flow Indicator - Manual (Page 4)

Use only gaskets that have been specified by the manufacturer or the supervising
engineer. Be certain that they are clean and fresh with no bumps, tears or serious
imperfections.
Using a torque wrench, tighten the fasteners in a regular pattern to avoid uneven loads
on the glass. (For Typical Tightening Patterns, See Figure A) It is necessary to torque
individual fasteners in small amounts, moving to the next fastener after each
increment of torque. A maximum difference of 3 FT-LBS. between fasteners should
be maintained on larger units; there should be less on smaller units. Continue
torquing until the value recommended for the unit is attained (See Torque Chart).
TORQUE CHART
TORQUE PER FASTNER
MODEL SIZE NEOPRENE & PTFE/NEO. GASKET
FVSF ALL 14 FT-LB
ASF ½” & ¾” 5 FT-LB
ASF 1” 8 FT-LB
ASF 1 ½” 10 FT-LB
ASF 2” 12 FT-LB
ASF 2 ½” & 3” 14 FT-LB
FIGURE A